Question

In ABC, if A:B:C=2:5:2, then Find all the angles of ABC.​

Answer 1

Answer:

Let the angles be 2x,5x,2x

Sum of angles of traingles is equal to 180°

therefore, 2x+5x+2x =180

9x=180

x=180/9 =20

<A = 20 ×2= 40°

<B=20×5= 100°

<C =20×2=40°